Window-screen



* UNITED 'STATES PATENT OFFICE.

vGABRIEL A. JACOBS, OF RED CREEK, NEW YORK.

WINDOW- SCREEN.

SPECIFICATION forming part of Letters Patent No. 421,719, dated February 18, 1890. Application led November 9, 1888. Serial No. 290,763. (No model.)

.T0 all whom, 'it may concern:

Be it known that I, GABRIEL A. JACOBS, of Red Creek, in the county of Wayne and State of New York, have invented a new and useful Improvement in Window-Screens, which improvement is fully set forth in the following specication and shown in the accompaing drawings;

The object of my invention is to produce a new window-screen and sash-balance, the device being such that when a sash is raised from the bottom or lowered from the top, as the case may be, a screen may be presented to cover the opening thus made, or not, as the operator may wish, to which device I add a balance for the sashes, the invention being hereinafter fully described, and particularly pointed out in the claims.

Referring to the drawings, Figure l is a view of the inside of a window having my improved screen attached in place, parts being broken away; Fig. 2, a vertical cross-section of the parts through the cavity holding one of the holders for the screen-bar, taken on the dotted line x in Fig. l, and viewed as indicated by the arrow. Fig. 3 shows some of the parts at the bottom of the lower sash, more particularly the weatherstrip and channel for the screen-bar and screen; Fig. e, a view of the inner face of a screen-bar, showing the` catch-openings for the holders, a part being broken out to expose the spring; Fig. 5, aview of th'e screen-bar, (seen as indicated by arrow in Fig. 4,) parts of the bar being broken away and longitudinally sectioned, as on the dotted line y; Fig. 6, a view similar to `that shown in Fig. 2, drawn to show more fully the sash-balance feature of the invention; Fig. 7, a View at the end of the lower roller, showing the manner of holding the core shaft or spindle; Fig. 8, an enlarged view of a clip for holding the screen-bars, showing the edge of the clip 5 and Fig. 9, a central longitudinal section of parts of the upper roller, showing the relation of the grooved pulley with the spindle and other parts. Fig. l is drawn to a scale smaller than the other iigures.

Referring to the parts of the device, A is the frame of the window, B the upper sash, and C the lower sash.

D is the upper screen-roller, set in an in.- ternal box or cavity a in the frame over the upper sash, and E the lower screen-roller, likewise placed in a box or cavity b in the frame below the lower sash.-

F and G are screen-bars for the upper and lower sashes, respectively, the upper one being fastened to the upper screen H and the lower one fastened to the lower screen I. These screen-bars are arranged to be attached to. their respective sashes to draw the screens with the sashes as the latter arek moved upward or downward, or to be detached from the respective sashes, so that the latter may move without the screens,as may be desired. The screen-rollers are hollow and each provided with au internal spring c, Fig. 2, coiled around a central shaft d, the tendency ofthe springs being to turn each roller in a manner to wind the screen upon the roller, and also to pull it away from the sash.

The screen-bars F G reach from side to side of the sash, and these may be of any form of cross-section desired-eas, for instance, quadrantal, as shown in most `of the figures, or rectangular, as shown in Fig. 6the form being a matterof convenience or of position. Each bar is faced with a metallic strip e and formed with a longitudinal cavity f, in which to receive a detaching-rod g. The detaching-rod is held to move longitudinally in the screenbar and is operated by a knob or handle h, reaching out through a slot fi in said bar. A spring k tends to hold the detaching-rod at one extreme of its longitudinal movements.

ZZare openings through the metal face e into the cavity f at the respective ends of the rod g. The sash is provided with two spring catches or holders 'n mheld in cavities 0 0 in position to reach into the respective openings Z Zto engage the'spriug-bar, so that when the sash is moved it will carry the spring-bar, and consequently the screen, with it. f

As shown in Figs. 4 and 5, the detaching-- rod is formed with two inclined parts or surfaces p p, leading to other parts r r, which project into vthe respectivel openings Z Z, so that the outer surfaces of the parts r rco'lne about even with the outer face of the metal facing e of the bar.v Now, by moving the de- Ico taching-rod endwise by means of the handle h, so that the high parts r ojare presented to the respective holders n fn, the latter are pushed back against their springs into the cavities in the sash and caused to release the screen-bar, in which case the sash may be moved without the bar and screen. Left to themselves the rod will be thrown by the spring k back out of the way of the holders and the latter will enter the openings Zlwhen the sash is brought back to the bar, these being the normal positions of the various parts.

When a screen-bar is detached from asash as above described, the stress of the spring in the roller holds the screen-bar snugly in place against the window-frame at the top or at the bottom, as the case may be, without regard to the movements of the sash. The screen-bars are formed with tenons s at their respective ends, which project into vertical races t in the sides of the window-frame, the edges of the respective screens also project-ing within said races. These tenons prevent the respective bars froml turning or moving back from the .sa-shes, thus preventing' them from becoming detached from the bolts 71,' and to further hold the bars snugly against the respective sashes clips c are secured to the sashes at points opposite the ends of the bolts, which overlap the bars and prevent them separating from the sashes.

In case of the lower screen-roller E the shaft d is held motionless at its ends in rests u, rigid with the window-frame, and the spring is fastened to the shaft at one end and to the roller at the other, this construction being common in curtain rolls and fixtures; but the construction of the upper roller D is different, in this roller the shaft being held to rotate in its bearings u. rIhe shaft (Z is provided at its ends with grooved pulleys if, upon which are wound cords or cables a', which extend downward and are attached to the lower sash. As shown in Fig. G, the cable leads from one side of the axis of the roller, while the screen II leads from the other side, which construction causes one sash to balance the other, the roller turning freely upon the shaft, except as to the action of the intervening spring. The lower sash is suspended from parts (pulleys lr) rigid with the shaft (Z on one side, and the upper sash is suspended from the roller on the other side of the common axis, and the shaft and roller being connected by a yielding spring admits of independent motion within limits of the shaft and roller. From this it will be understood that the two sashes may move independently of each other, while constantly tending to balance each other. Each sash must always move more or less sluggishly on account of the friction between the numerous moving parts, which friction aids in permitting the two sashes to move independently, though constantly tending to balance each other. This balance action can of course occur only when the upper sash and its screen are connected. To further explain, it both sashes are in place and the upper one, for instance, be drawn downward, the lowerone will not immediately move, nor will it move at all until the lowering of the upper sash causes a stress upon the spring c sufficiently intense to overcome the friction and inertia of all the parts in addition to the weight of the lower sash, and if the upper sash be lowered to a distance the lower one may remain down, or it may be raised to any given point and remain balanced without the upper sash moving from its position.

The balance feature is used only where the window has an upper and a lower sash, as shown. In case of a window with a single sash-as, for instance, a window ina railwaycar-the balance device is not needed. Vhen it is used, the screen-bar F is, as a matter of adaptation, formed rectangular in. cross-se@ tion and inserted in the top rail of the upper sash. in a rabbet or groove, as shown.

An angular weather-strip b, Fig. 3, of sheet metal, is, by preference, inserted in the frame to Vaid in keeping water from entering the rollercavity when the lower sash is raised.

That I claim as my invention isl. In combination with the upper and lower sash of a window, a frame for the window, formed with a cavity over the sash, a hollow roller in said cavity, a screen upon said roller connected with the upper sash, a

t rotary shaft within said roller, a spring connecting said roller and shaft, pulleys rigid with said shaft, and cables connecting said `the sash to hold the screen-ba r, the latter having tenons adapted to iit in the grooves of the frame, substantially as shown.

GABRIEL A. JACOBS. Witnesses:

PATRICK MALoNnv, (ino. RonnrsoN.

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